Agents can apply to sign up for the program through a newly launched
partner web portal on CoreSite.com or through one of CoreSite's selected
national master agents. Once enrolled, partners will soon have the
ability to refer leads online with guaranteed rapid-response from a
dedicated CoreSite team.

"Our new channel program allows our agent partners to work as a seamless
extension of the CoreSite team," said Steven Smith, senior vice
president of sales at CoreSite. "CoreSite is committed to constant
improvement, and we're confident that this program will strengthen our
agent community with dedicated support, attractive incentives and a
differentiated portfolio."

"CoreSite has long served as a trusted partner to WTG and our 3,300
subagents," said Vince Bradley, president and CEO at WTG.
"The features of CoreSite's new channel program are a testament to its
dedication to agent partners and differentiate the program from those
offered by other providers."

In addition to extending the accessibility of CoreSite solutions to
customers, the program will create significant sales opportunities for
qualified agents and master agents in the U.S. Participating agents will
be able to offer CoreSite's full portfolio of interconnection and
colocation solutions, including connection to the company's Open
Cloud Exchange-a rapidly growing community of enterprises and
public, private and hybrid cloud providers, such as AWS Direct Connect.

CoreSite Realty Corporation (News - Alert) (NYSE:COR) delivers secure and reliable data
center solutions across eight key North American markets. CoreSite
connects,�protects and delivers an optimal performance environment and
continued operation of mission-critical data and IT infrastructure for
enterprises and�Internet, private networking, mobility, and
cloud�service providers. CoreSite's�scalable platform of over two and a
half million square feet of efficient, network-dense, cloud-enabled data
center capacity enables customers to accelerate business performance,
reduce operating costs and increase flexibility across their IT and
communications systems. CoreSite's 350 professionals deliver
best-in-class service by placing customer needs first in supporting the
planning, implementation and operating requirements foundational to
delivering reliable, secure and efficient IT operating environments.

More than 750 of the world's leading enterprises, carriers and mobile
operators, content and cloud providers and media and entertainment
companies choose CoreSite to connect, protect and optimize their
performance-sensitive data, applications and computing workloads.
CoreSite provides valuable gateways to global business opportunities
with direct access to more than 275 carriers and ISPs, inter-site
connectivity and CoreSite's�Open Cloud Exchange, which supports rapid,
efficient and scalable Ethernet access to multiple key public clouds,
enabling simple, flexible, multiple-cloud capabilities. For more
information, visit�www.CoreSite.com.

Forward Looking Statements

This press release may contain forward-looking statements within the
meaning of the federal securities laws. Forward-looking statements
relate to expectations, beliefs, projections, future plans and
strategies, anticipated events or trends and similar expressions
concerning matters that are not historical facts. In some cases, you can
identify forward-looking statements by the use of forward-looking
terminology such as "believes," "expects," "may," "will," "should,"
"seeks," "approximately," "intends," "plans," "pro forma," "estimates"
or "anticipates" or the negative of these words and phrases or similar
words or phrases that are predictions of or indicate future events or
trends and that do not relate solely to historical matters.
Forward-looking statements involve known and unknown risks,
uncertainties, assumptions and contingencies, many of which are beyond
CoreSite's control, that may cause actual results to differ
significantly from those expressed in any forward-looking statement.
These risks include, without limitation: the geographic concentration of
CoreSite's data centers in certain markets and any adverse developments
in local economic conditions or the demand for data center space in
these markets; fluctuations in interest rates and increased operating
costs; difficulties in identifying properties to acquire and completing
acquisitions; significant industry competition; CoreSite's failure to
obtain necessary outside financing; CoreSite's failure to qualify or
maintain its status as a REIT; financial market fluctuations; changes in
real estate and zoning laws and increases in real property tax rates;
and other factors affecting the real estate industry generally. All
forward-looking statements reflect CoreSite's good faith beliefs,
assumptions and expectations, but they are not guarantees of future
performance. Furthermore, CoreSite disclaims any obligation to publicly
update or revise any forward-looking statement to reflect changes in
underlying assumptions or factors, of new information, data or methods,
future events or other changes. For a further discussion of these and
other factors that could cause CoreSite's future results to differ
materially from any forward-looking statements, see the section entitled
"Risk Factors" in CoreSite's most recent annual report on Form 10-K, and
other risks described in documents subsequently filed by CoreSite from
time to time with the Securities and Exchange Commission.